Is this a good value?

http://gainesville.craigslist.org/grd/1169904230.html

http://gainesville.craigslist.org/grd/1169952445.html

I can get both of these for $275
Is this a good value and about how many plants could I grow at one time with these lights?

or is this a better option?
http://gainesville.craigslist.org/for/1140729928.html